The water cooling can be arranged in several con-
figurations, the most common system choice be-
ing a central cooling water system.
Advantages of the central cooling system:
• Only one heat exchanger cooled by seawater,
and thus, only one exchanger to be overhauled
• All other heat exchangers are freshwater cooled
and can, therefore, be made of a less expensive
material
• Few noncorrosive pipes to be installed
• Reduced maintenance of coolers and compo-
nents
• Increased heat utilisation.
Disadvantages of the central cooling system:
• Three sets of cooling water pumps (seawater,
central water and jacket water.
• Higher first cost.
For information on the alternative Seawater Cool-
ing System, see Chapter 12.
An arrangement common for the main engine and
MAN Diesel & Turbo auxiliary engines is available
on request.
For further information about common cooling
water system for main engines and auxiliary en-
gines please refer to our publication:
Uni-concept Auxiliary Systems for Two-Stroke Main
Engines and Four-Stroke Auxiliary Engines
The publication is available at www.marine.man.eu
→ ’Two-Stroke’ → ’Technical Papers’.
Central Cooling
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